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Finding the Fourth Proportional to 3,930.65, 5,895.09 and 1,157.51

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Solution

The fourth proportional to 3,930.65, 5,895.09 and 1,157.51 is: 1,736.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.65 : 5,895.09 = 1,157.51 : x
  2. Step 2: Convert to fraction form
    3,930.65/5,895.09 = 1,157.51/x
  3. Step 3: Cross multiply
    3,930.65x = 5,895.09 × 1,157.51
  4. Step 4: Simplify right side
    3,930.65x = 6,823,625.63
  5. Step 5: Solve for x
    x = 6,823,625.63/3,930.65
  6. Step 6: Final answer
    x = 1,736.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.